[rac] Download all rules for a country code in libaddressinput.

third_party/libaddressinput/chromium/cpp/src/lookup_key.h

+// Copyright (C) 2013 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef I18N_ADDRESSINPUT_LOOKUP_KEY_H_
+#define I18N_ADDRESSINPUT_LOOKUP_KEY_H_
+
+#include <libaddressinput/address_field.h>
+#include <libaddressinput/util/basictypes.h>
+#include <libaddressinput/util/scoped_ptr.h>
+
+#include <map>
+#include <string>
+
+namespace i18n {
+namespace addressinput {
+
+class Rule;
+
+// Sample usage:
+//    LookupKey country_key("CA");
+//    Rule country_rule = RetrieveRule(country_key.GetKeyValue());
+//    country_key.SetRule(country_rule);
+//
+//    LookupKey* administrative_area_key = country_key.AddSubKey("AB");
+//    administrative_area_key->SetRule(
+//        RetrieveRule(administrative_area_key.GetKeyValue()));
+//
+//    Process(administrative_area_key->GetLevel(),
+//            administrative_area_key->GetRule());
+//
+//    LookupKey* language_code_key = country_key.AddLanguageCodeKey("fr");
+//    language_code_key->SetRule(
+//        RetrieveRule(language_code_key.GetKeyValue()));
+//
+//    Process(language_code_key->GetLevel(),
+//            language_code_key->GetRule());
+class LookupKey {
+ public:
+  explicit LookupKey(const std::string& country_code);
+  ~LookupKey();
+
+  // Returns the string representation of this key, for example "data/US/CA".
+  const std::string& GetKeyValue() const;
+
+  // Returns the level of this key, for example ADMIN_AREA.
+  AddressField GetLevel() const;
+
+  // Takes ownership of |rule|.
+  void SetRule(const Rule* rule);
+
+  // The caller does not own the result.
+  const Rule* GetRule() const;
+
+  // Adds a sub-key and returns it. The caller does not own the result.
+  LookupKey* AddSubKey(const std::string& sub_key);
+
+  // Adds a language code key and returns it. The caller does not own the
+  // result.
+  LookupKey* AddLanguageCodeKey(const std::string& language_code);
+
+  // Returns the lookup key for |sub_key| or NULL. The caller does not own the
+  // result.
+  LookupKey* GetSubKey(const std::string& sub_key) const;
+
+  // Returns the lookup key for |language_code| or NULL. The caller does not own
+  // the result.
+  LookupKey* GetLanguageCodeKey(const std::string& language_code) const;
+
+ private:
+  typedef std::map<std::string, LookupKey*> LookupKeys;
+
+  LookupKey(const std::string& key_value, AddressField level);
+
+  const std::string value_;
+  const AddressField level_;
+  scoped_ptr<const Rule> rule_;
+  LookupKeys sub_keys_;
+  LookupKeys language_code_keys_;
+
+  DISALLOW_COPY_AND_ASSIGN(LookupKey);
+};
+
+}  // namespace addressinput
+}  // namespace i18n
+
+#endif  // I18N_ADDRESSINPUT_LOOKUP_KEY_H_